Burrowing Chillwurm

Trample, Prophecy
When this creature enters the battlefield, if it was
cast from your hand, exile it with 4 tremor
counters on it. Whenever prophecy triggers, if
this card is in exile, deal damage equal to the
number of tremor counters on it to every
creature, then remove a tremor counter from it.
When this creature has no tremor counters on it
return it to the battlefield.